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    • 4. 发明授权
    • Trunking radio system with frequency diversity
    • 具有频率多样性的集群无线电系统
    • US5493695A
    • 1996-02-20
    • US79713
    • 1993-06-18
    • Gary AitkenheadNicholas W. WhinnettAnthony P. Van Den Heuvel
    • Gary AitkenheadNicholas W. WhinnettAnthony P. Van Den Heuvel
    • H04B7/12H04W72/06H04W84/08H04B7/02
    • H04W84/08H04B7/12H04W24/00H04W72/042H04W72/044
    • This invention relates to a trunking radio system (FIG. 1) having a central station and at least one remote station for communication with the central station over a number of frequency-divided radio channels. The central station has a transmitter (10) for transmitting a number of signals to different remote units on different channels and a trunking controller (12) for allocating channels to different remote units. The trunking controller monitors the excess number of channels over the number of channels allocated to remote units. The central controller signals to a remote unit to allocate a channel to the remote unit when there is at least one excess channel. Signals received from the remote unit over the at least two channels are diversity combined (21). The remote unit has a receiver for receiving signalling from the central station and a diversity transmitter (34, 35, 39) responsive to the signalling for transmitting a signal over the at least two channels. The invention also relates to a central station and a remote unit per se.
    • 本发明涉及一种具有中心站和至少一个远程站的中继无线电系统(图1),用于通过多个分频无线电信道与中心站通信。 中心站具有用于向不同信道上的不同远程单元发送多个信号的发射机(10)和用于向不同远程单元分配信道的集群控制器(12)。 中继控制器监视分配给远程单元的通道数量的多余通道数。 当存在至少一个多余的信道时,中央控制器向远程单元发出信号,以向远程单元分配信道。 通过至少两个信道从远程单元接收的信号是分集组合的(21)。 远程单元具有用于从中央站接收信令的接收机和响应于用于在至少两个信道上发送信号的信令的分集发射机(34,35,39)。 本发明还涉及中心站和远程单元本身。